Draft regulator for automobile radiators



July 22, 1930.

V. W. HOYE DRAFT REGULATOR FOR ATOMOBILE RADIATORS l Filed April 25, 1928 @www Patented July 22, 1930 UNITEDy STATES VICTOR W. HOYE, 0F NEW CASTLE, PENNSYLVANIA DRAFT REGULATOR FOR AUTOMOBILE RADIATORS Application led April 23,

This invention relates to improvements in draft regulators for controlling the evaporated liquids in automobile radiators.

One object of the invention is to provide a device of this character which will automatically seal'the overflow pipe under all normal running conditions to prevent the escape of water or, other fluids or automatically vent the radiator when overheating and expansion of the liquids therein occurs.

Another object is to provide awdraft regulator of this character which under normal running conditions will prevent objectionable odors such as alcohol fumes, steam and the like from escaping and entering the automobile.

A further object is to provide a draft regulator which automatically seals the radiator overflow pipe against draft caused by air rushing past the lower endof the pipe when the automobile is in motion and which action of the air creates a suction or draft through the pipe to the interior of the radiator.

Still anotherl objectL is to provide a device of this character which will prevent the loss of liquids through the overflow pipe when the radiator is being filled.

With the foregoing and other objects in view the invention consists in the novel subject matter hereinafter described and claimed, the description being supplemented by the accompanying drawing.

Figure l is a rear elevation of the upper portion of an automobile radiator with parts broken away and in section,lshowing`the applica-tion of one form of the invention.

Fig. 2 is a vertical sectional view' of the form of the device illustrated in Fig. 1 shopwing in dotted laines the open position of the valve. c

F 3 is a perspective view of the same with the cap removed.

Fig. 4 is a side' elevation partly in section of a modified form ofthe device.

The improved draft regulator and pressure relief valve is adapted for disposition at the upper end of the conventional radiator overflow pipe 6, which end is usually disposed in vapors, but which will 192s. serial No, 272,290.

the filling neck N of the radiator R. In Figs.u

l to 3 of the drawing, the device is shown as embodying a casing side wall 7, the upper portion of which is rectangular for reception within the flange of a rectangular flanged cover 8. The lower portion of the wall 7 is formed by a comparatively long tube 9 and a relatively short tube' 10 disposed side by side and joined by a common vertical wall 11. This wall 1l terminates below the cover 8, leaving a communicating passage 12 between the upper ends of the tubes as shown in Fig. 2.

The lower end of tube 9 is enlarged to fit onto the upper end of the overflow pipe 6, the enlargement providing an annular stop shoulder 13 with which the upper end of the overflow pipe engages and which limits the downward movement of the tube on the pipe.

The other tube 10 has its lower end bent inwardly throughout its circumference to form a valve seat 14 with which is engaged a ball valve l15. The valve 15 normally closes the lower end of the tube l() andprevents the escape of liquids, vapors or ,fumes from the radiator. Vhen, however undue expansion of the liquid in the radiator occurs from any cause, the pressure'therefrom will lift the ball valve from its seat thus venting the radiator and relieving the pressure after which the ball will again drop onto its seat by gravity, thus automatically closing the tube and preventing any lfurther escape of fumes', vapors or liquids from the radiator.

The form of the invention described in the foregoing is adapted for use invconnection` with overflow pipes already installed in radiators. The modified form ofthe invention shown in connection with overflow pipes to be installed in radiators when theyv are built, and forms an integral part of the overflow pipe.

The modified bodies portions 9', 10 and 14 identical with corresponding parts above described, with the exception that the tube 9 is formed by a continuation of the upper end of the :overflow pipe 6.

From the foregoing the operation of the device will be readily understood and it will in Fig. 4fof the drawing is usedv K construction of Fig. 4 em- I be seen that under normal running conditions, the use of my regulator will shut o draft and suction through the over-flow pipe thus preventing the escape of fumes, vapors and liquids from the radiator. It will also be seen that by the use of this invention on the upper end of the overflow pipe, the loss of liquid through the pipe when filling the radi? ator is prevented. The vapors retained in the radiator by the operation of my improved draft regulator will condense and return to their original form thus further eliminating waste.

I claim:

In a device of the class described, a casing side wall of rectangular Jit'orm at its upper end and having its lower portion formed by a relatively short and a comparatively long vertical tube disposed side by side and joined by a common vertical wall, said common vertical wall terminating below the upper end of said casing side wall leaving the two tubes in communication with each other at their upper ends, the lower end of said relatively short tube being bent inwardly throughout its circumference to provide a valve seat, a ball valve in said relatively short tube resting on said seat, and a rectangular cover having a continuous llange surrounding and secured to said rectangular upper end of said casing side wall.

In testimony whereof I have hereunto affixed my signature. l

VCTOR W. I-IOYE.

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